21508080

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{8147}}^1$

素因数の和:8174

約数の個数: 80

約数和(自身を含む): 72745344

約数和(自身を除く): 51237264

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 33, 40, 44, 48, 55, 60, 66, 80, 88, 110, 120, 132, 165, 176, 220, 240, 264, 330, 440, 528, 660, 880, 1320, 2640, 8147, 16294, 24441, 32588, 40735, 48882, 65176, 81470, 89617, 97764, 122205, 130352, 162940, 179234, 195528, 244410, 268851, 325880, 358468, 391056, 448085, 488820, 537702, 651760, 716936, 896170, 977640, 1075404, 1344255, 1433872, 1792340, 1955280, 2150808, 2688510, 3584680, 4301616, 5377020, 7169360, 10754040, 21508080]

約数ペア:

[(1, 21508080), (2, 10754040), (3, 7169360), (4, 5377020), (5, 4301616), (6, 3584680), (8, 2688510), (10, 2150808), (11, 1955280), (12, 1792340), (15, 1433872), (16, 1344255), (20, 1075404), (22, 977640), (24, 896170), (30, 716936), (33, 651760), (40, 537702), (44, 488820), (48, 448085), (55, 391056), (60, 358468), (66, 325880), (80, 268851), (88, 244410), (110, 195528), (120, 179234), (132, 162940), (165, 130352), (176, 122205), (220, 97764), (240, 89617), (264, 81470), (330, 65176), (440, 48882), (528, 40735), (660, 32588), (880, 24441), (1320, 16294), (2640, 8147)]